I can see how growing old would be a real concern for Seph, especially since it would affect his ability to fight, and his entire purpose in life. It's really sad to think about it!

Although, Seph's worrying about his appearance was amusing, especially with him refusing to go bald or get wrinkles. XD That's just like him! And, I suppose if it was possible to avoid it though sheer willpower, Seph would be the one to do it.